双排桩受力变形规律及影响因素有限元分析

Finite Element Analysis of Deformation Law and Influencing Factors for Double-row Piles

以武汉市凯德广场深基坑工程双排桩支护结构为依托,采用Midas GTS NX软件对其进行数值仿真模拟分析。得到桩间加固和无加固双排桩桩身位移随深度变化曲线,分析其各自变化规律及异同点;得到两者桩身应力随深度变化曲线,分析其各自变化规律及异同点,及桩间土加固对桩身受力产生的影响;分析得到预留土土体力学性质对桩间加固和无加固双排桩位移的影响;同时分析了桩间加固土体弹性模量E、黏聚力c值单独变化对桩身位移产生的影响,以及两参数同时变化对桩身位移影响。

Based on the double-row piles supporting structure in deep foundation excavation of Wuhan Cade Square,numerical simulation analysis of double-row piles supporting structure is completed by software Midas GTS NX. The displacement curves are obtained with depth variation of double-row piles which are strengthened and are not strengthened between piles. This paper analyzes the variation law and the same or different points,and the stress variation curves are obtained with depth variation of pile body. This paper analyzes the variation law and the same or different points,and the impact of strengthening between piles on pile body ＇s stress; analyzes the impact of reserved soil ＇ mechanical properties on the displacement of double-row piles which are strengthened and are not strengthened between piles; and analyzes the impact of the E and c values ＇ individual change of reinforced soil between piles on pile＇s displacement,and the impact of the two parameters＇ simultaneous change on pile＇s displacement.